Vapor chamber having sealing structure

ABSTRACT

A vapor chamber having sealing structure, comprising a body and a capillary wick. The body has a first plate and a second plate. The first and second plates are attached to each other, which collectively define a sealed chamber therein and form a lip side. The lip side has an inlet channel and a stamping seal. The inlet channel is connected to the sealed chamber at one end and is connected to the stamping seal at the other end. The stamping seal is formed in a non-I shape. The capillary wick is selectively disposed within the sealed chamber of the body. Therefore, the air-tightness of the vapor chamber is increased by the stamping seal.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates to a vapor chamber having sealingstructure, and in particular to a vapor chamber having sealing structurethat improves a seal structure and thus increase the air-tightness ofthe vapor chamber.

2. Description of the Related Art

A vapor chamber is a heat transfer device that dispatches heat in threedimensions. The structure of the vapor chamber is generally formed bycombining two opposing plates having a capillary wick together, forminga vacuum inside the chamber, and filling up with a working fluid, and aheat transfer device with a low boiling point is therefore manufactured.The vacuum within the chamber is created by a pump via a tube presetduring the manufacturing. The tube allows the pump to draw air and theworking fluid to be filled up, and the tube would be sealed in the finalstep to maintain the vacuum.

A Chinese utility model, published as CN202014433U, discloses a vaporchamber having a sealed inlet including a body, capillary wick, workingfluid, and a tube via which a fluid is filled up and air is drawn. Thebody is formed by combining two opposing plates that define a chambertherein. The tube extending through the body has a channel incommunication with the chamber. The upper plate is pressed and deformedin a spot where the tube is disposed inside so that the channel issealed. In addition, an end edge of the tube is aligned with an sideedge of the body. Therefore, no portion of the tube extends out andobstructs other mechanisms, the spot where the deformation occurs can becut again by a shearing process, and so forth. However, the said vaporchamber still has a tube disposed between the body, such that the spotwhere the tube is disposed may cause a leakage even though the spot hasbeen pressed and sealed. Furthermore, a leakage, decreasing theair-tightness of the vapor chamber, may also occur due to an unexpectedexternal force.

Therefore, to deal with the drawbacks of the conventional vapor chamberis the priority for those having ordinary skill in the art.

SUMMARY OF THE INVENTION

Accordingly, for addressing the drawbacks of the prior arts, the mainobject of the present invention is to provide a vapor chamber havingsealing structure that increase the air-tightness of the vapor chamber.

To achieve the above-mentioned object, the present invention is providedwith a vapor chamber having sealing structure, comprising a body and acapillary wick. The body has a first plate and a second plate. The firstand second plates are attached to each other, which collectively definea sealed chamber therein and form a lip side. The lip side has an inletchannel and a stamping seal. The inlet channel is connected to thesealed chamber at one end and is connected to the stamping seal at theother end. The stamping seal is formed in a non-I shape. The capillarywick is selectively disposed within the sealed chamber of the body.Therefore, the air-tightness of the vapor chamber is increased by thestamping seal.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded perspective view of a first embodiment of a vaporchamber having sealing structure of the present invention;

FIG. 2 is a perspective view of the first embodiment of the vaporchamber having sealing structure of the present invention;

FIG. 3 is a side cross-sectional view of a second embodiment of thevapor chamber having sealing structure of the present invention;

FIG. 4 is a side cross-sectional view of a third embodiment of the vaporchamber having sealing structure of the present invention;

FIG. 5 is a perspective view of a fourth embodiment of the vapor chamberhaving sealing structure of the present invention;

FIG. 6 is a side cross-sectional view of a fifth embodiment of the vaporchamber having sealing structure of the present invention; and

FIG. 7 is a side cross-sectional view of a sixth embodiment of the vaporchamber having sealing structure of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIGS. 1 and 2 are an exploded perspective view and a perspective view ofa first embodiment of a vapor chamber having sealing structure of thepresent invention, respectively. As shown in the FIGS., the vaporchamber having sealing structure of the present invention includes abody 1 and a capillary wick 2.

The body 1 has a first plate 11 and a second plate 12 that, whenattached to each other, collectively define a sealed chamber 13 thereinand form a lip side 14. The lip side 14 surrounds the outer perimeter ofthe sealed chamber 13. The first plate 11 has a first surface 111 and asecond surface 112, while the second plate 12 has a third surface 121and a fourth surface 122. The first and second plates 11, 12 can bealuminum, copper, commercially pure titanium, aluminium alloy, copperalloy, ceramics, stainless steel, or any combination thereof.

The lip side 14 has a inlet channel 141 and a stamping seal 142. Theinlet channel 141 is connected to the sealed chamber 13 at one end, andis connected to the stamping seal 142 at the other end. The stampingseal 142 is formed in a non-I shape, i.e., in a Ω shape, upside-down Ushape, U shape, horseshoe shape, X shape, C shape, wave shape, or UnionJack shape. The height of the stamping seal 142 is lower than that ofthe lip side 14 of the first plate 11.

A groove 15 and the inlet channel 141 are defined by a structure thatprotrudes upwardly from the first surface 111 to the second surface 112of the first plate 11. The second and fourth surfaces 112, 122 aredisposed on the upper and lower sides of the body 1, respectively, inwhich the second surface 112 is defined as a condensation surface, whilethe fourth surface 122 is defined as a heat absorption surface. Thegroove 15 forms the sealed chamber 13 when the first and second plates11, 12 are combined together.

The capillary wick 2 is selectively disposed within the sealed chamber13 of the body 1, and in this embodiment is disposed on the first andthird surfaces 111, 121 of the first and second plates 11, 12 inside thesealed chamber 13. The capillary wick 2 can be disposed on either thefirst surface 111 of the first plate 11 or the third surface 121 of thesecond plate 12, or both the first and third surfaces 111, 121 of thefirst and second plates 11, 12 (not shown).

Therefore, the stamping seal 142 can increase the air-tightness of thevapor chamber by preventing a vacuum and working fluid from leaking.

Referring to FIG. 3, a side cross-sectional view of a second embodimentof the vapor chamber having sealing structure of the present inventionis shown. Some structures of this embodiment are the same as theabove-mentioned first embodiment, and here are not described again. Thedifference between this embodiment and the first embodiment is that theentire sealed chamber 13 is filled with the capillary wick 2 which isdisposed in between the first and second plates 11, 12. The capillarywick 2 in this embodiment is illustrated as a mesh structure, and is notlimiting; in other embodiments, the capillary wick 2 can be sinteringpowder, a mesh structure, a fiber structure, a corrugated sheet, or anycombination thereof.

Referring to FIG. 4, a side cross-sectional view of a third embodimentof the vapor chamber having sealing structure of the present inventionis shown. Some structures of this embodiment are the same as theabove-mentioned first embodiment, and here are not described again. Thedifference between this embodiment and the first embodiment is that thefirst surface 111 of the first plate 11 is provided with a plurality ofrecesses 113 that extends from the first surface 111 to a side of thecapillary wick 2 in a direction toward to the groove 15. The pluralityof recesses 113 can therefore enhance condensation of the working fluid3 inside the body 1 during the vapor-liquid circulation, and support thefirst and second plates 11, 12. In other embodiments, there can be atleast a supporting column (not shown) disposed between the first andsecond plates 11, 12 against the first and third surfaces on itsrespective two ends to support the first and second plates.

Referring to FIG. 5, a perspective view of a fourth embodiment of thevapor chamber having sealing structure of the present invention isshown. Some structures of this embodiment are the same as theabove-mentioned first embodiment, and here are not described again. Thedifference between this embodiment and the first embodiment is thatcorresponding first cutout 143 and second cutout 144 are disposedadjacent to the stamping seal 142 on the lip side 144 of the first andsecond plates 11, 12. The first and second cutouts 143, 144 decreaselikelihood of a stress concentration that occurs around the stampingseal during the stamping process of the stamping seal 142.

Referring to FIG. 6, a side cross-sectional view of a fifth embodimentof the vapor chamber having sealing structure of the present inventionis shown. Some structures of this embodiment are the same as theabove-mentioned first embodiment, and here are not described again. Thedifference between this embodiment and the first embodiment is that thestamping seal 142 is recessed into both the first and second plates 11,12, which means the protrusion caused by the stamping seal of the body 1is lower than the height of the lip side of the first and second plates11, 12.

Referring to FIG. 7, a side cross-sectional view of a fifth embodimentof the vapor chamber having sealing structure of the present inventionis shown. Some structures of this embodiment are the same as theabove-mentioned first embodiment, and here are not described again. Thedifference between this embodiment and the first embodiment is that thebody 1 is provided with a tube 4 that is connected to the inlet channel141 (not shown in the figure since the inlet is blocked by the tube 4).A portion of the tube 4 becomes flat upon the formation of the stampingseal 142, thereby maintaining the vacuum inside the seal chamber 13 ofthe body 1.

The main object of the present invention is to provide a vapor chamberhaving sealing structure that is not provided with a pipe via which airis drawn and a fluid is filled up. So, the invention can deal with thedrawback that the tube from conventional art may not be firmly sealedafter being disposed so as not to prevent a vacuum leak. In addition,leakages in the direction of the inlet channel can be prevented, and asealing range can be wider in other directions, which allows the multidirections of the lip side of the body to be sealed, preventing thevacuum leak.

What is claimed is:
 1. A vapor chamber having sealing structure,comprising: a body having a first plate and a second plate, the firstand second plates attached to each other collectively defining a sealedchamber therein and forming a lip side, the lip side having a inletchannel and a stamping seal, the inlet channel connected to the sealedchamber at one end and connected to the stamping seal at the other end,the stamping seal being formed in a non-I shape; and a capillary wickselectively disposed within the sealed chamber of the body.
 2. The vaporchamber having sealing structure according to claim 1, wherein thestamping seal is formed in a Ω shape, an upside-down U shape, a U shape,a horseshoe shape, an X shape, a C shape, a wave shape, or a Union Jackshape.
 3. The vapor chamber having sealing structure according to claim1, wherein the lip side surrounds the outer perimeter of the sealedchamber.
 4. The vapor chamber having sealing structure according toclaim 1, wherein the stamping seal is lower than the height of the lipside of the first plate.
 5. The vapor chamber having sealing structureaccording to claim 1, wherein the first plate has a first surface and asecond surface, and the second plate has a third surface and a fourthsurface, wherein a groove and the inlet channel are defined by astructure that protrudes upwardly from the first surface to the secondsurface of the first plate, and wherein the groove forms the sealedchamber when the first and second plates are combined together.
 6. Thevapor chamber having sealing structure according to claim 1, wherein theentire sealed chamber is filled with the capillary wick which isdisposed in between the first and second plates.
 7. The vapor chamberhaving sealing structure according to claim 1, wherein the capillarywick is disposed on either the first surface of the first plate or thethird surface of the second plate, or both the first and third surfacesof the first and second plates.
 8. The vapor chamber having sealingstructure according to claim 5, wherein the second and fourth surfacesare disposed on the upper and lower sides of the body, respectively, inwhich the second surface is defined as a condensation surface, and thefourth surface is defined as a heat absorption surface.
 9. The vaporchamber having sealing structure according to claim 1, wherein thestamping seal is recessed into both the first and second plates, and islower than the height of the lip side of the first and second plates.10. The vapor chamber having sealing structure according to claim 1,wherein corresponding first cutout and second cutout are disposedadjacent to the stamping seal on the lip side of the first and secondplates.
 11. The vapor chamber having sealing structure according toclaim 1, wherein the first and second plates are aluminum, copper,commercially pure titanium, aluminium alloy, copper alloy, ceramics,stainless steel, or any combination thereof.
 12. The vapor chamberhaving sealing structure according to claim 1, wherein the first surfaceof the first plate is provided with a plurality of recesses that extendsfrom the first surface to a side of the capillary wick in a directiontoward to the groove.
 13. The vapor chamber having sealing structureaccording to claim 1, wherein the body 1 is provided with a tube that isconnected to the inlet channel, and a portion of the tube becomes flatupon the formation of the stamping seal.